power.h

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#pragma once
#include <runtime-sys/sys.h>
#include <stdbool.h>
#include <stdint.h>

// TYPES

#define HW_POWER_CTX_SIZE 64 

// Opaque power management handle
typedef struct hw_power_t hw_power_t;

typedef enum {
  HW_POWER_UNKNOWN = 0,        
  HW_POWER_USB = (1 << 0),     
  HW_POWER_BATTERY = (1 << 1), 
  HW_POWER_RESET = (1 << 2),   
} hw_power_flag_t;

typedef void (*hw_power_callback_t)(hw_power_t *power, hw_power_flag_t flags,
                                    uint32_t value, void *user_data);

// LIFECYCLE

hw_power_t *hw_power_init(uint8_t gpio_vsys, uint8_t gpio_vbus,
                          hw_power_callback_t callback, void *user_data);

bool hw_power_valid(hw_power_t *power);

void hw_power_finalize(hw_power_t *power);

uint8_t hw_power_battery_percent(hw_power_t *power);

hw_power_flag_t hw_power_source(hw_power_t *power);